I've been communicating with one of the engine builders on the forum and have almost decided on AFR 165R or AFR 185R heads for my eventual SBF H/C/I swap. One of the things I notice in other posts by KC8 (and others) is that one of the advantages of the AFR heads is that the valves are lighter as a result of the smaller diameter of the valve stem.
I guess my question is: considering that AFR appears to use "non-standard" valves in their heads, am I stuck buying replacement or upgraded valves from AFR, or can they be sourced from other aftermarket companies, too?
TIA for whatever help you can provide!!
Cheers from Dugly
